Charles f



(No Model.) C. F. HENDERSON.

PULLEY. No. 425,822 Patented Apr. 8, 1890.

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UNITED STATES CHARLES HENDERSON, OF OIVOSSO, MICHIGAN, ASSIGNOR TOSAMUEL F.

HENDERSON AND DAVID M. ESTEY, BOTH OF SAME PLAGE.

SPECIFICATION forming part of Letters Patent No. 425,322, dated April 8,1890. Application tiled January l5, 1890.. Serial No. 337,011. (Nomodel.)

To @ZZ whom, it may concern,.-

Be it known that I, CHARLES F. HENDER- SON, a citizen of 'the UnitedStates, and a resident of Owosso, in the county of Shiawassee and Stateof Michigan, have invented certain new and useful Improvements inPulleys; and I do hereby declare that the following is a full, clear,and exact description of the invention, which will enable others skilledin the m art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, which form a part of thisspecification, and in which- Figure l is a longitudinal sectional viewthrough my improved pulley at right angles to and across th'e axle, andFig. 2 is a transverse sectional view on the line am in Fig. l.

Likeletters of reference denote corresponding parts in both the figures.

My invention has relation to pulleys to be used in connection Withbelting in operating machinery; and it consists in the improvementhereinafter more fully described and claimed, whereby I affix theleather facing of 2 5 a pulley to the rim of the same in such a mannerthat it will not become detached, no matter how great a strain thepulley may be subjected to.

Experience has demonstrated that in leather-faced pulleys the leatherfacing soon becomes loosened from the body of the pulley, owing to thegreat frictional strain upon the facing, and the object of my inventionis to so prepare the rim of the pulley that its leather facing orcovering may be aflixed to the same in a simple, durable, and lastingmanner.

lVith this object in view the rim of the pulley (shown at A) is firstthoroughly cleaned by washing it with good soap or lye or treat- 4o ingit with diluted acid, so that not a particle of grease or oil shallremain. After this has been done and the moisture removed by dryin g Itake a raw onion or piece of garlic, out it open, and rub it all overthe rim' of the pulley in such a manner as to provide the same with athin film or coating of the onion-juice or garlic-juice, and after thisfilm has been absorbed by the pulley-face I take thin split leather of aproper width and cover one side of the 5o leather with a good elasticcement. I prefer to use for this particular purpose the cement describedand claimed by me in another application. After the strip of leather hasbeen thus coated on one side it is Wrapped around the pulley tightly,care being taken to ex* clude all air and avoid the formation ofairbubbles between the leather Wrapping and the surface of the pulley.Only a single strip of leather may be used, or several strips may beemployed, wound around one" another in layers until the requisitethickness has been obtained.

In the accompanying drawings, the letter l5 designates the inner coatingof cement, and O the leather coating or lining in its finished state.

I am Well aware that it is not new, broadly, to provide a pulley withone or more strips of leather and paper or other suitable material Woundaround the pulley in several layers and fastened around by some sort ofcement; but, as I have stated at the outset of my speciiication,practical experience with such pulleys proves that sooner or later thecement loses its grip upon the surface of the pulley, Which results inloosening of the leather facing long before the same is worn off. Ihavefound, however, that by treating the pulley with onion-juice orgarlic-juice in the manner hereinbefore described the surface upon whichthe leather facing is to be aidixed becomes peculiarly tenacious of thecement spread between it and the leather, thus making the facinglasting, strong, and durable. It is obvious that old pulleys may betreated in this manner as well as new ones, and it will also be foundthat the treatmentmay be applied with equal advantage to pulleys made ofwood, iron, or other metal.

' Having thus described my invention, I claim and desire to secure byLetters' Patent of the United Statesl. The hereinbefore-described methodof treating pulleys preparatory to providing the same with a facing ofleather or similar material, which consists in, first, removing allgrease from the surface of the pulley to which the facing is to beaffixed, and, secondly, after the pulley has been so treated and driedcoating it with a thin lin of the juice of onions IOC or garlic,substantially as and for the purpose herein shown and set forth.

2. The hereinbefore-desoribed process of afixing a facing or covering ofleather or equiva- 5 lent material to the rim of a pulley, whichconsists in, first, removing all grease from the face of the rim towhich the leather is to be applied; secondly, thoroughly drying the rimto remove all moisture; thirdly, covering the ro dried rim with a thinfilm or coating of the eX- pressed juice of onions or garlic, and,fourthly, Winding one or more facing-strips of leather or similarmaterial covered With adhesive cement around the rim of the pulley sotreated,

substantially `as and for the purpose herein I5 shown and set forth.

In testimony that I claim the foregoing as d my own I have hereuntoaffixed my signature in presence of two Witnesses.

CHARLES F. HENDERSON Witnesses:

J. C. VAN CAMP,` MCELWANE MINER.

